Plowshare guard



Nov. 2l, 1939. F. o. Bl-:RQulsT 2,181,007

PLOWSHARE GUARD Filed may 19, '195s M @Magg/mw@ wrm 5% y AT1-ORN EYs Patented Nov. 21, 1939 nutren amiga earsur ortica 2,181,007 PLoWsHAaE GUARD Frank O; Berquist, Somerville, Mass. Application May 19, 1938, semi No. 208,923 s claims. i (ci. sav-'20s) This invention relates to plowshare guards and more particularly to a device which may be readily attached to an ordinary plow.

The invention has for its principal object to provide a simple yet strong and durable device which may be applied to an ordinary plow so as to function as a root and vine cutting colter in opening a path ahead of the plowshareand at the same time providing means for riding the plowshare over an obstruction.

The invention consists in the novel form and arrangement of the device and in its particular application to the plow as hereinafter described anddefined in the appended'claims, reference being had to the accompanying drawing forming a part of this specification, and in which Figure 1 is a side elevation of the plowshare and the adjacent portion of the beam with the guard applied thereto and showing the guard device about to come in contact with an obstacle;

Figure 2 is a section through the plow on or about the line 2-2 of Figure 1; y l

Figure 3 is a view similar to Figure 1, but showing the guard device as riding over an obstacle; and

Figure 4 is a fragmentary section on the line li-dk of Figure 1.

Referring now to the drawing, the numeral I designates the beam of the plow, the rear end ,portion of which is turned downwardly, as at I I, and has an ordinary share I2 attached thereto in the usual manner.

Mounted on the beam I0, forwardly of the share I2, is a guard which is designated generally by the numeral I3. As shown, the guard comprises an open frame in the general form ofA a quadrant having an arcuate forward cutting portion I@ terminating in a heel I5 which is' located' in the same horizontal plane with and closely contiguous to the point i6 of the plowshare. In order to rigidly attach the guard to thev plow beam itl the upper end portions of the arcuate forward member I4 and vertical rear member I3 are offset, as at I'I, to form a right angular Vseat for the beam I, the extreme upper end portions I8 of said arms I3 and i4 being bolted to the beam Ill, as at I9.

'Ihe forward edge portion 2li` of arm I4 of the guard is beveled to a sharp cutting edge throughout substantially .the entire length thereof except for a' relatively short distance in the immediate region of the heel portion I5, as at 2 I, by which Aprovision the guard readily enters the soil and functions effectively as a colter for 4severing roots and vines and cutting a way through the soil in advance of the point I6 of the plowshare, the relatively blunt portion 2| of the Y device near the heel I5 serving to appreciably claims'.

to the specific construction and arrangements the arcuate retard the digging action of .the device and to minimize the wear thereon. Y

While the device functions as a root and vine cutter it has a special function as a guard to prevent the plowshare lpoint fromv `catching l' against large vines and roots and other obstructions such. as large bouldersy and ledge rocks which are not readily moved aside, in that the arcuate edge portion 20 rides over such obstruc tions and lifts the plowshare clear thereof, and by the relative close relation of the plow point I@ to the heel I5 of the guard the point is made to clearv the obstruction without catching thereagainst. `This is particularly advantageous in the use' of tractor drawn plows where it is desirable or necessary to -keep the motive power goingl without interruption ordamage to the plow or the power means. 1 Obviously, the structure "may be modified in marry respects without departing from the spirit of the invention as deiined by the appended The invention,` therefore, is not limited shown in the drawing.

What is claimed is:

1. A plowshare guard comprising a member attached to the draft beam of the plow in front of the share, said member having an arcuate forv ward edge portion extending entirely downwardly and rearwardly from the under side of the beam and terminating with a heel point substantially coincident with the point of the plowshare,

2. In a plowshare guard, in combination with the draft beam and share of the plow, a guard comprising a quadrant frame including a straight l vertical rear leg member and an arcuate leading leg member joined integrally at their lowerends, the upper ends of said leg members being separately` attached to the beam, the arcuate leg member being sharpened to provide a cutting edge extending from top to bottom thereof, the bottom corner of the quadrant constituting the heel of the device andbeing located substantially coincident with the point of the plowshare;

3. In a plowshare guard, in combination with the beam and share of the plow, a guard comprising a quadrant frame having offset shouldered upper seating portions attached to the beam, the

arcuate portion of the frame being disposed forwardly and sharpened'to a cutting edge substantially the entire length thereof, the bottom corner portion of the quadrant being relatively blunt on its under side and constituting the heel of thedevice and the trailing end of said heel being located vsubstantially coincident with the point of the plowshare, l y

, FRANK O. BERQUIST. 

